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faust2juce transforms a Faust DSP program into a fully working JUCE standalone application or plugin, which can possibly be controlled with MIDI or OSC messages. Polyphonic instruments are automatically created from polyphonic aware Faust DSP code, which contains interface parameters with the following freq, gain and gate names. The metadata declare nvoices '8'; kind of line with a desired value of voices can be added in the source code. See Creating polyphonic instruments.

Polyphonic synthesiser can be created using JUCE Synthesiser model or Faust own polyphonic architecture file (using the 'mydsp_poly' class). The -jsynth parameter has to be used to choose the JUCE model.

JUCE is a partially open-source cross-platform C application framework, used for the development of desktop and mobile applications. JUCE is used in particular for its GUI and plug-ins libraries. The aim of JUCE is to allow software to be written such that the same source code will compile and run identically on Windows, Mac OS X and Linux. Juce Projucer Live C IDE has been 'coming soon' for Windows and Linux for 8 months now. Does anyone have more information?

faust2juce uses several UI interfaces, subclasses of the base UI class (defined in the architecture/faust/gui/UI.h header) to link to various JUCE components:

  • JuceGUI.h: contains the main JuceGUI class (and additional helpers classes) to display Faust UI components (buttons, sliders, bargraphs.) using JUCE widgets
  • JuceOSCUI.h: allows to link Faust UI components (buttons, sliders, bargraphs.) to the JUCE OSC messaging system, allowing to control them in both directions
  • JuceParameterUI.h: allows to link Faust UI components (buttons, sliders, bargraphs.) with the JUCE AudioParameterFloat/AudioParameterFloat classes
  • JuceStateUI.h: allows to save/restore Faust UI components (buttons, sliders, bargraphs.) values using the JUCE state management system (MemoryInputStream/MemoryOutputStream classes)
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Some additional files are needed for soundfile and MIDI support:

  • JuceReader.h: contains code to load audio files using JUCE code, that will be used when the soundfile primitive is used in the Faust code
  • juce-midi.h: allows to link Faust UI components (buttons, sliders, bargraphs.) to the JUCE MIDI messaging system (for inputs and outputs)

Two different achitecture files will be used to glue the previously described files with the Faust C++ generated class:

  • juce-plugin.cpp: is used to create a JUCE plugin
  • juce-standalone.cpp: is used to create a JUCE stanalone application

How to use

faust2juce is used with the following command: download sound driver for windows 7 ultimate 32 bit

faust2juce [-standalone] [-nvoices <num>] [-effect auto <effect.dsp>] [-jucemodulesdir <dir>] [-jsynth] [-midi] [-osc] [-llvm] [-soundfile] [additional Faust options (-vec -vs 8.)] file.dsp

By default it will create a plugin project, with a folder named with the dsp file name, containing a .jucer project with a FaustPluginProcessor.cpp file to be used by JUCE.

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When using -standalone mode, it will create a standalone project, with a folder named with the dsp file name, containing a .jucer project with a FaustAudioApplication.cpp file to be used by JUCE.

Juce Library

The resulting folder has to be moved on the 'examples' folder of your JUCE installation, the .jucer file has to be opened, and projects for specific native platforms can be generated. Dev c bloodshed free download.

Options

The following options are available:

  • -standalone : to produce a standalone project, otherwise a plugin project is generated
  • -nvoices <num> : to produce a polyphonic self-contained DSP with voices, ready to be used with MIDI or OSC
  • -effect <effect.dsp> : to produce a polyphonic DSP connected to a global output effect, ready to be used with MIDI or OSC
  • -effect auto : to produce a polyphonic DSP connected to a global output effect defined as 'effect' in <file.dsp>, ready to be used with MIDI or OSC
  • -jucemodulesdir <folder> : to set JUCE modules directory to <folder>, such as ~/JUCE/modules
  • -jsynth : to use JUCE polyphonic Synthesizer instead of Faust polyphonic code
  • -midi : activates MIDI control
  • -osc : activates OSC control
  • -llvm : to use the LLVM compilation chain (OSX and Linux for now)
  • -soundfile : when compiling DSP using 'soundfile' primitive, to add needed resources
  • -help or -h : shows the different options

Juce Api

As usual with faust2xx tools, other Faust compiler specific options can be given to faust2juce, like -cn name to give a name to the generated DSP class, or -vec -lv 1 -lv 1 to compile in vector mode.